JP2523218Y2 - Chassis dynamometer - Google Patents

Description

[Detailed description of the invention]

[Purpose of the invention]

[0002]

BACKGROUND OF THE INVENTION The present invention has a stator which has a stator between two rotating drums, on which a driving wheel of a vehicle is mounted to test various characteristics such as a driving force of the vehicle. It relates to a dynamometer.

[0003]

2. Description of the Related Art There is a conventional chassis dynamometer as shown in FIG. That is, the rotating drum device (14) on which the tires of the vehicle ride and the dynamometer (15) for absorbing the power of the vehicle are constituted independently, and the coupling (12)
And the power of the test vehicle was absorbed via the coupling. The flywheel device may also be directly connected to the rotating drum shaft.

[0004]

SUMMARY OF THE INVENTION In a conventional chassis dynamometer, a rotary drum device (1) on which a vehicle tire rides is used.
4) and the dynamometer (15) for absorbing the power of the vehicle are configured independently and directly connected by the coupling (12), so that the installation area is large, and the rotor and the rotary drum device (14) ), The amount of inertia is large, and the bearing loss of the rotor of the dynamometer (15) is transmitted to the oscillator and can be detected, but the bearing loss of the rotary drum (2) cannot be detected.

In view of the conventional problems, the present invention reduces the amount of inertia, minimizes the installation area, measures the bearing loss, and provides a chassis having a drum and a dynamometer capable of performing high-precision measurement. It is intended to provide a dynamometer.

[Structure of the invention]

[0007]

In order to achieve the above object, in the present invention, there is provided a rotating drum having a dynamometer having a stator with a winding and a rotor rotatably sandwiched from both axial sides, and a dynamometer. A frame support provided on the frame of the stator for supporting the rotor shaft via a rotary bearing, a roller rotary bearing provided on the outer periphery of the frame support, and a roller rotary bearing fixed to the inside of the rotary drum. A rotatable rotating shaft, a coupling directly connecting the rotor shaft and the rotating drum's rotating shaft, a swing bearing base for swingably supporting a dynamometer stator, and a dynamometer for measuring power. A load measuring device and a load cell are provided.

[0008]

[Function] In the chassis dynamometer of the present invention,
Since the roller can be placed outside the dynamometer without changing the shaft rigidity of the conventional absorption device, the installation area of the device can be minimized, and the rotational loss of the roller's rotating bearing can be measured with a load measurement device. Compared to this, more accurate measurement can be performed. It is also possible to directly connect to an accessory such as a flywheel.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.

A rotary drum (2) is provided so as to sandwich a dynamometer (15) having a wound stator (3) and a rotor (4) from both axial sides. A frame support (5a) is provided on a frame (3b) of the stator (3) for supporting a rotor shaft (4b) of a dynamometer via a rotary bearing (5). A roller rotation bearing (7) is provided on the outer periphery of the frame support (5a). A rotating shaft (2a) is fixed to the rotating drum (2) and rotatably provided via a roller rotating bearing (7). A coupling (12) for directly connecting the rotor shaft (4b) and the rotating shaft (2a) of the rotating drum (2) is provided. A swing bearing base (6) for swingably supporting the dynamometer (13) is provided on the base (10). The dynamometer (15) measures the power. Load measuring device (8) and load cell (9)
Is provided.

Next, the operation of the above embodiment will be described.

Since the dynamometer having the wound stator and the rotor is sandwiched from both sides in the axial direction, the size is reduced. Rotary shaft (2a)
The rotatable drum (2) is rotatably supported at the outer periphery of a roller rotation bearing (7) for rotatably supporting the roller. Accordingly, the rotation loss of the rotating shaft (2a) of the rotating drum is transmitted to the stator frame (3b) via the frame support (5a) and detected by the load cell, so that the measurement accuracy is improved. Further, the driving force of the driving wheels transmitted via the rotating drum (2), the rotating shaft (2a) and the rotor (4) and the armature reaction between the stator (3) and the rotor (4) cause
The corresponding repulsion torque acts on the stator (3). A load cell provided in the load measuring device (8) measures the repulsion torque. That is, the driving force can be measured. For this measurement, it is necessary that the stator (3) is swingable, that is, rotatable to a desired range. However, the swing bearing stand (6) lifts the stator (3) by hydraulic pressure and makes it rotatable. So that it can rotate. However, the stator (3)
Is engaged with the base (10) via the load measuring device (8) and the load cell (9), so that it can rotate by a stroke limited by the load cell (9). If necessary, attached devices such as a flywheel (not shown) can be directly connected via the coupling (12).

[0013]

[Effects of the Invention] As described above, according to the present invention, the dynamometer is sandwiched on both sides in the axial direction by a rotating drum, thereby minimizing the installation area, reducing equipment costs, and reducing shaft rigidity as before. The responsiveness is improved by reducing the drum shaft and reducing the inertia, and by installing the roller on the dynamometer oscillator via a bearing, the bearing loss can be measured as an absorption load to the vehicle, and It is possible to provide a chassis dynamometer that can be directly connected to ancillary equipment such as a wheel device and can greatly contribute to downsizing, high precision, and reduction of equipment costs.

[Brief description of the drawings]

FIG. 1 is a half vertical sectional view showing an embodiment of a chassis dynamometer of the present invention.

FIG. 2 is an elevation view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Chassis dynamometer 2 ... Rotary drum 2a ... Rotary shaft 3 ... Stator 3a ... Frame 4 ... Rotor 4b ... Rotor shaft 5 ... Rotary bearing 5a ... Frame support part 6 ... Swing bearing stand 7 ... Roller rotary bearing 8 ... Load measurement Apparatus 9 ... Load cell 12 ... Coupling 15 ... Dynamometer

Claims (1)

(57) [Scope of request for utility model registration] 1. A rotary drum provided rotatably with a dynamometer having a wound stator and a rotor sandwiched from both sides in the axial direction, and provided on a frame of the stator which supports a rotor shaft of the dynamometer via a rotary bearing. Frame support,
A roller rotating bearing provided on the outer periphery of the frame supporting portion, a rotating shaft fixed in the rotating drum and rotatably provided via the roller rotating bearing, and a coupling for directly connecting the rotor shaft and the rotating shaft of the rotating drum. A chassis dynamometer comprising: a swing bearing base for swingably supporting a stator of a dynamometer; a load measuring device provided on the dynamometer to measure power; and a load cell.